Cop winding machine



Patented Nov. 22, 1932 UNITED STATES WALTER SCHWEITER, OF HORGEN, NEAR ZURICH, SWI'IZER.LAND` COP WINIILING'y MACHINE Application mea December 3, 1930, serial No. 499,796, and in Germany January '27, Yieaa I The invention relates to cop winding machines having aI revolving and simultaneously reciprocating bobbin spindle and a thread guide which is fed in dependence upon the increase of the thread layers on the bobbin.

This invention constitutes an improvementI upon the one embodied in my copending application, Serial No. 487,088, led October 7, 1980, Patent No. 1,865,970, July 5, 1932.

In cop winding machines of this type it is already known to provide a second cam disc within the gear case which cam disc cooperates with the guide supporting bar and imparts to the latter a periodical axial reciprocating motion whereby a displacement of the thread layers is obtained during winding at the point of the winding cone. Now when this periodical reciprocating motion of the guide supporting bar is to be altered in accordance with the varying material to be wound, and the cam disc is to be exchanged for this purpose, this exchange is extremely diiiicult because the cam disc is mounted in the gear case.

The object of the invention is to overcome this drawback, which object is obtained ac` cording to the invention by the shaft of the cam disc with its end forming a pinion extending through the case wall, which pinion outside the case is in mesh with a crown of teeth of the cam disc which is loosely mounted outside the case. The cam disc may be lodged in a recess of the case wall which recess is closed by an easily detachable cover so as to be protected from access of dust and dirt particles.

In order that the invention may be more readily understood, a preferred embodiment of the same is illustrated by way of example in the accompanying drawing in which Figure 1 is a sectional view of the parts un der consideration of a cop winding machine,

Figure 2 is a sectional view along line II-II of Figure 1,

Figures 3 and 4 show a detail in front and end view, respectively,

Referring to the drawing, the spindle shaft 1 which carries the winding spool is rotated by means of pulley 4, and is reciprocated by the grooved cam disc 2, which has a throw designated by 7L. The assembly ofthe spindle shaft is so designed that the rotating and re# ciprocating functions thereof may be performed without interference. 3 designates the thread guide carried by the support 5, ,55 which is advanced with the formation of the spool by means of the usual cone ring 6 and ball lock 7 along the guide bar 8. AElement 9 denotes the shaft of the cam disc which shaft is mounted in the case wall 15. Its outer end forms a pinion 10 which projectsbeyond the case wall and meshes with a gear wheel 11a. mounted on a stub shaft 11. The latter is likewise mounted in the case wall 15. rIhe gear wheel 11a carries on its front face several cams 12 of different heights.

The guide supporting bar 8 which cooperates with the cams 12 is under the action of a spring 19 lodged in the outer bearing 18 of bar 8 and tending to hold the latter permanently in contact with the cams 12. Bar 8 is further secured against rotation by pins 23 fixed thereto engaging slots 24 provided in the case of bearing 18, Figures 3 and 4. The bar 8,which is forced against the cammed surface 12, has imparted thereto an independent reciprocating movement corresponding to the height of the cams. This additional movement of the thread guide, which is calculated to be effected at the point of winding the peak of the tapered end of the spool, produces a progressive length of stroke at that portion between successive layers of the thread. This axial displacement of the winding results in a firmer binding of the layers of thread at the peak of the cop.

Gear wheel 11a is lodged in a recess 16 of the case wall 15, which recess is closed by an easily detachable cover 17. When the gear wheel 11aI with its cams 12 is to be replaced by another gear wheel, it is only necessary to loosen the two screws 20 which hold the cover 17 in position, to withdraw wheel 11a and insert therefor another wheel having cams 12 of different shape or number.

What is claimed is In a cop winding machine, a spindle adapted to receive a spool to be wound, means for rotating and reciprocating said spindle comprising a driven shaft disposed in the machine casing, a thread guide disposed adjacent the spool2 means for independently reciprocatin sald thread guide for displacing the ends o? the successive layers of thread at the peak of the wound cop comprising a cammed wheel mounted exteriorly of said casing, a recess on the external Wall of said casing fur' enclosing said carmned wheel, a removable cover to tightly close said recess, transmission means extending from said driven shaft '6e said cam wheel in said recess, and a. guide bar yieldingly retained against said cammed wheel at one end thereof, and carryin ,said thread uide.

The goregoing speclcation signed at Z- zich, Switzerland., this 22nd day of Novemher, 193e WALTER SCHWEITER. 

